Copper Alloy CC496K-GM vs CC496K-GS
Copper Alloy · CC496K temper comparison
CC496K-GM and CC496K-GS are two conditions of the same copper alloy grade, CC496K: GM (permanent (chill) mould cast) versus GS (sand cast). The chemistry is identical, so every difference below comes from the condition. CC496K-GM is the stronger of the two: yield strength 100 MPa (14.5 ksi) against 90 MPa (13.1 ksi) for CC496K-GS, about 11% more; tensile strength follows at 210 MPa (30.5 ksi) vs 190 MPa (27.6 ksi). In exchange, CC496K-GS is the more ductile: elongation 10% versus 8% for CC496K-GM, and CC496K-GM is harder (65 HB vs 60 HB).
CC496K-GMChoose it when strength drives the design.
CC496K-GSChoose it when the part is bent, formed or impact-loaded.
CC496K-GM vs CC496K-GS: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all copper alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all copper alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 28 GPa4.1 Msi · Bulk Modulus 79 GPa11.5 Msi · Poisson's Ratio 0.34 · Charpy V-Notch Impact (RT) 8 J5.9 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 9.25 g/cm³0.33 lb/in³ · Melting Point (Solidus) 762°C1,404 °F · Liquidus Temperature 930°C1,706 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 52 W/m·K30 BTU/hr·ft·°F · Specific Heat Capacity 340 J/kg·K0.08 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18.5 µm/m·K10.3 µin/in·°F · Latent Heat of Fusion 165 J/g70.9 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 11 % IACS · Electrical Resistivity 1.57×10⁻⁷ Ω·m6.18 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.26 V · Corrosion Resistance 60 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Same in both: Machinability 88 / 100 · Machinability Rating (AISI 1212 = 100 %) 70% · Formability (cold) 5 / 100 · Castability 85 / 100 · Brazeability / Solderability 45 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 45 MJ/kg19,347 BTU/lb · Embodied Carbon (primary production) 3 kg CO₂/kg · Embodied Water 210 L/kg25.2 gal/lb · Typical Recycled Content 70%
Strength versus weight
Yield strength against density for every copper alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
CC496K-GM vs CC496K-GS — frequently asked
Is CC496K-GM stronger than CC496K-GS?
Yes. CC496K-GM has a typical yield strength of 100 MPa (14.5 ksi) against 90 MPa (13.1 ksi) for CC496K-GS — about 11% more. Tensile strength is 210 MPa (30.5 ksi) vs 190 MPa (27.6 ksi).
Which condition does FabDigit quote by default, GM or GS?
GC is the default CC496K condition in the FabDigit quote flow (neither GM nor GS). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
When should I choose CC496K-GM over CC496K-GS?
Pick CC496K-GM when strength drives the design. Pick CC496K-GS when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CC496K-GM and CC496K-GS side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.